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Published 20 hours ago • verified publisher icon Alan-Gomes

/reload not working as expected

Open CC007 opened this issue 5 years ago • 7 comments

When I start the server, the plugin loads fine (now that the classloaders and shading is fixed), but when using /reload I get the following exceptions:

[05:09:03 INFO]: 2019-06-01 05:09:03.290  INFO 25616 --- [  Server thread] c.github.cc007.headsplugin.HeadsPlugin   : [HeadsPluginAPI] Disabling HeadsPluginAPI v2.0.0-SNAPSHOT

[05:09:03 INFO]: 2019-06-01 05:09:03.293  WARN 25616 --- [  Server thread] .s.c.a.CommonAnnotationBeanPostProcessor : Destroy method on bean with name 'org.springframework.cloud.netflix.archaius.ArchaiusAutoConfiguration' threw an exception: java.lang.IllegalStateException: Failed to introspect Class [com.netflix.config.ConfigurationManager] from ClassLoader [org.bukkit.plugin.
java.PluginClassLoader@43d33e22]

[05:09:04 INFO]: Loaded 524 recipes
[05:09:04 INFO]: Reloading ResourceManager: Default, bukkit
[05:09:05 INFO]: Loaded 524 recipes
[05:09:07 INFO]: 2019-06-01 05:09:07.463  INFO 25616 --- [  Server thread] c.github.cc007.headsplugin.HeadsPlugin   : [HeadsPluginAPI] Loading HeadsPluginAPI v2.0.0-SNAPSHOT

[05:09:07 INFO]: 2019-06-01 05:09:07.471  INFO 25616 --- [  Server thread] c.github.cc007.headsplugin.HeadsPlugin   : [HeadsPluginAPI] Enabling HeadsPluginAPI v2.0.0-SNAPSHOT

[05:09:08 INFO]: 2019-06-01 05:09:08.864  WARN 25616 --- [  Server thread] org.springframework.boot.ResourceBanner  : Banner not printable: class path resource [banner.txt] (class java.io.FileNotFoundException: 'class path resource [banner.txt] cannot be opened because it does not exist')

java.io.FileNotFoundException: class path resource [banner.txt] cannot be opened because it does not exist
        at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:180) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.ResourceBanner.printBanner(ResourceBanner.java:64) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.SpringApplicationBannerPrinter$Banners.printBanner(SpringApplicationBannerPrinter.java:142) [HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.SpringApplicationBannerPrinter.print(SpringApplicationBannerPrinter.java:71) [HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.SpringApplication.printBanner(SpringApplication.java:575) [HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:309) [HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at com.github.cc007.headsplugin.HeadsPlugin.onEnable(HeadsPlugin.java:29) [HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:347) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:410) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugin(CraftServer.java:436) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugins(CraftServer.java:350) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.reload(CraftServer.java:809) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.Bukkit.reload(Bukkit.java:604) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:28) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:704) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchServerCommand(CraftServer.java:689) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.DedicatedServer.handleCommandQueue(DedicatedServer.java:459) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:418) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:831) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:729) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at java.lang.Thread.run(Thread.java:744) [na:1.8.0]


[05:09:08 INFO]: 2019-06-01 05:09:08.873  INFO 25616 --- [  Server thread] o.s.boot.SpringApplication               : No active profile set, falling back to default profiles: default

[05:09:08 INFO]: 2019-06-01 05:09:08.974  WARN 25616 --- [  Server thread] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.github.cc007.headsplugin.config.Application]; nested exception is java.io.F
ileNotFoundException: class path resource [com/github/cc007/headsplugin/business/services/chat/ChatManager.class] cannot be opened because it does not exist

[05:09:08 INFO]: 2019-06-01 05:09:08.980 ERROR 25616 --- [  Server thread] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.github.cc007.headsplugin.config.Application]; nested exception is java.io.FileNotFoundException: class path resource [com/github/cc007/headsplugin/business/services/chat/ChatManager.class] cannot be opened because it does not exist
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:181) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:315) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:232) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:705) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at com.github.cc007.headsplugin.HeadsPlugin.onEnable(HeadsPlugin.java:29) [HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:347) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:410) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugin(CraftServer.java:436) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugins(CraftServer.java:350) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.reload(CraftServer.java:809) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.Bukkit.reload(Bukkit.java:604) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:28) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:704) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchServerCommand(CraftServer.java:689) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.DedicatedServer.handleCommandQueue(DedicatedServer.java:459) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:418) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:831) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:729) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at java.lang.Thread.run(Thread.java:744) [na:1.8.0]
Caused by: java.io.FileNotFoundException: class path resource [com/github/cc007/headsplugin/business/services/chat/ChatManager.class] cannot be opened because it does not exist
        at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:180) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:51) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:103) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.createMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:88) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.getMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:75) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:81) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:190) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:295) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:242) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:199) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:167) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        ... 26 common frames omitted


[05:09:08 INFO]: 2019-06-01 05:09:08.984 ERROR 25616 --- [  Server thread] Minecraft                                : Error occurred while enabling HeadsPluginAPI v2.0.0-SNAPSHOT (Is it up to date?)

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.github.cc007.headsplugin.config.Application]; nested exception is java.io.FileNotFoundException: class path resource [com/github/cc007/headsplugin/business/services/chat/ChatManager.class] cannot be opened because it does not exist
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:181) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:315) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:232) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:705) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:531) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at com.github.cc007.headsplugin.HeadsPlugin.onEnable(HeadsPlugin.java:29) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:265) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:347) ~[spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:410) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugin(CraftServer.java:436) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.enablePlugins(CraftServer.java:350) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.reload(CraftServer.java:809) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.Bukkit.reload(Bukkit.java:604) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:28) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchCommand(CraftServer.java:704) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at org.bukkit.craftbukkit.v1_13_R2.CraftServer.dispatchServerCommand(CraftServer.java:689) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.DedicatedServer.handleCommandQueue(DedicatedServer.java:459) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.DedicatedServer.b(DedicatedServer.java:418) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.MinecraftServer.a(MinecraftServer.java:831) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at net.minecraft.server.v1_13_R2.MinecraftServer.run(MinecraftServer.java:729) [spigot.jar:git-Spigot-1a3504a-dfa7583]
        at java.lang.Thread.run(Thread.java:744) [na:1.8.0]
Caused by: java.io.FileNotFoundException: class path resource [com/github/cc007/headsplugin/business/services/chat/ChatManager.class] cannot be opened because it does not exist
        at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:180) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:51) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:103) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.createMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:88) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.boot.type.classreading.ConcurrentReferenceCachingMetadataReaderFactory.getMetadataReader(ConcurrentReferenceCachingMetadataReaderFactory.java:75) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:81) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:190) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:295) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:242) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:199) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:167) ~[HeadsPluginAPI-2.0.0-SNAPSHOT.jar:na]
        ... 26 common frames omitted


[05:09:08 INFO]: 2019-06-01 05:09:08.993  INFO 25616 --- [  Server thread] Minecraft                                : Server permissions file permissions.yml is empty, ignoring it

CC007 avatar Jun 01 '19 03:06 CC007

My guess is that the classloader is not properly restored at the onDisable hook, my test plugins works fine with:

@Override
public void onDisable() {
    try {
        if (context != null) {
            context.close();
        }
    } finally {
        context = null;
        Thread.currentThread().setContextClassLoader(defaultClassLoader);
    }
}

Can you verify this?

If this is not the case, you can also restore the default classloader right after the application startup:

@Override
public void onEnable() {
    try {
        // app startup
    } finally {
        Thread.currentThread().setContextClassLoader(defaultClassLoader);
    }
}

The bukkit plugin reloading system is a mystery, so it's hard to deduce the problem.

Alan-Gomes avatar Jun 01 '19 14:06 Alan-Gomes

My code looks the same, except for the try/finally usage, but that should only matter if an exception is actually thrown durind the on disable.

The only difference is that I change the class loader before starting the spring application, because it needs to be set before feign is initialized

CC007 avatar Jun 02 '19 13:06 CC007

I still don't know what the cause of this problem, maybe something caused by the classloader, but no clue about exactly what it is. Can you reproduce the problem without the feign client?

Alan-Gomes avatar Jun 13 '19 16:06 Alan-Gomes

I'll try that once I have time

CC007 avatar Jun 13 '19 19:06 CC007

Have you tried look into certain beans that get their close or destroy method automatically called when destroyed? If this happens to bukkit, of course it would close the server.

CC007 avatar Nov 24 '19 15:11 CC007

Can you reproduce this bug in the latest version with SpringSpigotBootstrapper? (0.20.7)

It now starts the spring context in a different thread, without having to change the context class loader of the main one, this can solve other problems too.

Alan-Gomes avatar Jul 06 '20 22:07 Alan-Gomes

I might have accidentally fixed this by using a compound classloader. I need to test this a bit further, because there are other issues during the restart (my database lockfile is causing problems, see CC007/HeadsPluginAPI#8). If I'm still experiencing issues with restart after fixing those, I'll give the SpringSpigotBootstrapper a try.

CC007 avatar Jul 21 '20 23:07 CC007